import {AdminApi} from '@/api/system/admin'
import {getToken, setToken, removeToken} from '@/utils/auth'
import router, {resetRouter} from '@/router'
import store from '@/store'

const state = {
    token: getToken(),
    name: '',
    avatar: '',
    introduction: '',
    roles: []
}

const mutations = {
    SET_TOKEN: (state, token) => {
        state.token = token
    },
    SET_INTRODUCTION: (state, introduction) => {
        state.introduction = introduction
    },
    SET_NAME: (state, name) => {
        state.name = name
    },
    SET_AVATAR: (state, avatar) => {
        state.avatar = avatar
    },
    SET_ROLES: (state, roles) => {
        state.roles = roles
    }
}

const actions = {
    // user login
    login({commit}, userInfo) {
        return new Promise((resolve, reject) => {
            AdminApi.login(userInfo).then(response => {
                commit('SET_TOKEN', response.token)
                setToken(response.token)

                resolve()
            }).catch(error => {
                reject(error)
            })
        })
    },

    refreshToken({commit}, token) {
        return new Promise((resolve, reject) => {
            commit('SET_TOKEN', token)
            setToken(token)
            resolve()
        })
    },

    // get user info
    getInfo({commit, state}) {
        return new Promise((resolve, reject) => {
            AdminApi.getInfo().then(response => {
                if (!response) {
                    reject('验证失败，请重新登录')
                }

                // roles must be a non-empty array
                if (!response.rolePermissionIds || response.rolePermissionIds.length <= 0) {
                    reject('没有操作权限')
                }

                commit('SET_ROLES', response.rolePermissionIds)
                commit('SET_NAME', response.username)
                commit('SET_AVATAR', 'https://wpimg.wallstcn.com/f778738c-e4f8-4870-b634-56703b4acafe.gif')
                commit('SET_INTRODUCTION', '')

                resolve(response)
            }).catch(error => {
                reject(error)
            })
        })
    },

    // user logout
    logout({commit, state, dispatch}) {
        return new Promise((resolve, reject) => {
            commit('SET_TOKEN', '')
            commit('SET_ROLES', [])
            removeToken()
            resetRouter()

            // reset visited views and cached views
            // to fixed https://github.com/PanJiaChen/vue-element-admin/issues/2485
            dispatch('tagsView/delAllViews', null, {root: true})

            resolve()
        })
    },

    // remove token
    resetToken({commit}) {
        return new Promise(resolve => {
            commit('SET_TOKEN', '')
            commit('SET_ROLES', [])
            removeToken()
            resolve()
        })
    },

    // dynamically modify permissions
    async changeRoles({commit, dispatch}, role) {
        const token = role + '-token'

        commit('SET_TOKEN', token)
        setToken(token)

        const {roles} = await dispatch('getInfo')

        resetRouter()

        // generate accessible routes map based on roles
        const accessRoutes = await dispatch('permission/generateRoutes', roles, {root: true})
        // dynamically add accessible routes
        router.addRoutes(accessRoutes)

        // reset visited views and cached views
        dispatch('tagsView/delAllViews', null, {root: true})
    }
}

export default {
    namespaced: true,
    state,
    mutations,
    actions
}
